Home / 21,064.66-29,082.38-13,412.25

Finding the Fourth Proportional to 21,064.66, 29,082.38 and 13,412.25

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Solution

The fourth proportional to 21,064.66, 29,082.38 and 13,412.25 is: 18,517.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,064.66 : 29,082.38 = 13,412.25 : x
  2. Step 2: Convert to fraction form
    21,064.66/29,082.38 = 13,412.25/x
  3. Step 3: Cross multiply
    21,064.66x = 29,082.38 × 13,412.25
  4. Step 4: Simplify right side
    21,064.66x = 390,060,084.09
  5. Step 5: Solve for x
    x = 390,060,084.09/21,064.66
  6. Step 6: Final answer
    x = 18,517.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.